List of Rainbow Codes

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The Rainbow Codes were a series of code names used to disguise the nature of various British military research projects from after the Second World War until 1958 when they were replaced by an alphanumeric code system.

The Ministry of Supply (MoS) initiated the idea since during the war some German secret projects could be inferred from their code names; for example, that a radio navigation device "Wotan" used a single beam because the Germanic god Wotan was one-eyed. Each code name was constructed from a colour of the rainbow plus a noun taken from a list; for example:

The names were dropped with the end of the MoS, and their functions were handed over to the Ministry of Defence which started using randomly-selected codes comprising of two letters and three digits, eg. BL755 or WE177.

Contents

  • Black Arrow - a satellite launch vehicle derived from Blue Streak/Black Knight
  • Black Knight - a re-entry vehicle for Blue Streak
  • Black Maria - fighter IFF interrogator
  • Black Prince - proposed satellite launch vehicle based on Blue Streak/Black Knight - a.k.a. Blue Star
  • Black Rock - surface to surface guided missile

*AIRPASS = Airborne Interception Radar & Pilot's Attack Sight System

  • Green Bamboo - nuclear weapon
  • Green Cheese - nuclear anti-ship missile
  • Green Flax - SAGW (Surface-to-Air Guided Weapon) - surface to air missile - see Yellow Temple
  • Green Garland - infrared proximity fuze for Red Top
  • Green Garlic - Early Warning radar - a.k.a. AMES Type 80
  • Green Ginger - surveillance radars - combined installation of AMES Type 88 & AMES Type 89
  • Green Granite - nuclear weapons - Green Granite (small) & Green Granite (large)
  • Green Janet - see Blue Bishop
  • Green Light - SAGW - surface to air missile - see Short Sea Cat
  • Green Lizard - tube-launched SAM with variable geometry wings
  • Green Mace - anti-aircraft gun
  • Green Palm - airborne voice channel jammer
  • Green Satin - airborne Doppler navigation radar unit
  • Green Water - pilotless interceptor/SAGW

  • Indigo Hammer - nuclear warhead - small fission warhead/primary for SAGW missiles

  • Orange Crop - Racal MIR 2 ESM system for Royal Navy Lynx helicopters
  • Orange Harvest - S and X band warning receiver fitter to Shackletons
  • Orange Herald - nuclear weapon
  • Orange Nell - SAGW - surface to air missile
  • Orange Putter - Tail Warning radar fitted to Canberra and Valiant
  • Orange William - see Swingfire
  • Orange Yeoman - Early Warning radar & guidance for Bristol Bloodhound SAGW - a.k.a. AMES Type 82

  • Purple Granite - nuclear weapon - see Green Granite
  • Purple Passion - Sub-kiloton demolition mine project related to Violet Mist.

  • Yellow Anvil - nuclear artillery shell warhead
  • Yellow River - mobile tactical control radar for Bristol Bloodhound - a.k.a. AMES Type 83
  • Yellow Sun - nuclear weapon
  • Yellow Temple - nuclear-armed SAGW development of Red Shoes

  1. ^ British Secret Projects: Jet Bombers Since 1949 Tony Buttler Midland Publishing 2003

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